The return pattern on your favorite stock has been 9 percent, 8 percent, -2 percent, 15 percent, and 21 percent over the last five years. What is the stock's arithmetic average return and holding period return?

10.20%; 8.24%

10.20%; 60.53%

8.24%; 10.20%

8.24%; 60.53%

8.25; 48.62%